S.L. 424.3 Art. 33No lifting machinery to be loadedbeyond safe working load.

(1) No lifting machinery, chains or other lifting appliance shall be loaded beyond the safe working load, except that a crane may be loaded beyond the safe working load in exceptional cases to such extent and subject to such conditions as may be approved by the engineer in charge or other competent person, if on each occasion:

(a) the written permission of the owner or his responsible agent has been obtained;

(b) a record of the overload is kept: Provided also that, where the load upon a single sheave pulley block is attached to the pulley block instead of to the chain or rope passing round the sheave, the load on the pulley block shall be deemed for the purpose of this regulation to be half the actual load.

(2) No load shall be left suspended from a crane, winch or other machine unless there is a competent person actually in charge of the machine while the load is so left.